English, Article, Journal or magazine article edition: Spatial Stochastic Frontier Models: accounting for unobserved local determinants of inefficiency Alexandra M. Schmidt; Ajax R. B. Moreira; Thais C. O. Fonseca; ...

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Bookmark: http://trove.nla.gov.au/version/2645
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Spatial Stochastic Frontier Models: accounting for unobserved local determinants of inefficiency
Author
  • Alexandra M. Schmidt
  • Ajax R. B. Moreira
  • Thais C. O. Fonseca
  • Steven M. Helfand
Physical Description
  • preprint
Notes
  • In this paper, we analyze the productivity of farms across n =​ 370 municipalities located in the Center-West region of Brazil. We propose a stochastic frontier model with a latent spatial structure to account for possible unknown geographical variation of the outputs. This spatial component is included in the one-sided disturbance term. We explore two different distributions for this term, the exponential and the truncated normal. We use the Bayesian paradigm to fit the proposed models. We also compare between an independent normal prior and a conditional autoregressive prior for these spatial effects. The inference procedure takes explicit account of the uncertainty when considering these spatial effects. As the resultant posterior distribution does not have a closed form, we make use of stochastic simulation techniques to obtain samples from it. Two different model comparison criteria provide support for the importance of including these latent spatial effects, even after considering covariates at the municipal level.
  • RePEc:ipe:ipetds:1220
Language
  • English
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